Played decisive role in reequipment of the artillery and development of its tactical application. In Soviet-Finnish War took part in breaching of Mannerheim Line. During World War П directed artillery on Leningrad Front, 1941, and participated in encirclement of Paulus’ army at Stalingrad.
Since 1918 in Soviet Army. Fought in Civil War as private, then commanded battery and later battalion. Commanded artillery regiment, then Chief of Artillery, Proletarian Infantry Division.
1935-1937 Head, Leningrad Artillery School. 1937-1939 Chief, Main Artillery Administration, Red Army. 1939 chief of artillery of army group fighting Japanese in Mongolia.
1939-1940 in Soviet- Finnish War commanded artillery on Karelian section of Front. Simultaneously Chief, Main Artillery Administration, Chief of Artillery, USSR Armed Forces. From beginning of World War II Commander in Chief of Artillery, USSR Armed Forces.
Simultaneously Chief, Main Artillery Administration. Until end of war on Supreme Command Staff. 1945-1950 Commander in Chief of Artillery, USSR Armed Forces.
1950-1953 President, Academy, of Artillery Science.